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SEOUL (Reuters) - South Korea's LG Chem Ltd <051910.KS>, a battery supplier for General Motors Co's (GM) (NYSE: GM) upcoming Bolt electric vehicles, said on Tuesday it expected the U.S. automaker to sell more than 30,000 of the cars next year.

LG Chem vice president Kang Chang-beom made the projection during a conference call to discuss the firm's third-quarter earnings.

GM will be launching its subcompact Chevrolet Bolt EV in the coming months and is seen as a key test of whether the technology can go mainstream in the United States. The car will have an average driving range of 238 miles on a full charge.